Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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            <s xml:id="echoid-s6408" xml:space="preserve">
              <pb o="572" file="0306" n="322" rhead="CHRIST. HUGENII"/>
            lineata cernitur, majori ellipſis diametro ad minorem ſe ha-
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            bente fere ut 5 ad 2. </s>
            <s xml:id="echoid-s6409" xml:space="preserve">Atque hæc ea figura eſt quam ab He-
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            velio, Ricciolo, & </s>
            <s xml:id="echoid-s6410" xml:space="preserve">Euſtachio de Divinis, anno 1648, 1649,
              <lb/>
            & </s>
            <s xml:id="echoid-s6411" xml:space="preserve">1650. </s>
            <s xml:id="echoid-s6412" xml:space="preserve">ſpectatam fuiſſe diximus. </s>
            <s xml:id="echoid-s6413" xml:space="preserve">Cujus itaque locum, hinc
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            inter ſigna ♊ & </s>
            <s xml:id="echoid-s6414" xml:space="preserve">♋, inde inter ♐ & </s>
            <s xml:id="echoid-s6415" xml:space="preserve">♑ conſtitui oportere cer-
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            tum eſt, quandoquidem iſtis annis ſignum ♊ Saturnus pera-
              <lb/>
            grabat & </s>
            <s xml:id="echoid-s6416" xml:space="preserve">in ♋ ſignum tranſibat. </s>
            <s xml:id="echoid-s6417" xml:space="preserve">Poſtea verò accuratius hunc
              <lb/>
            locum latiſſimè anſarum phaſeos inquirentes oſtendemus eum
              <lb/>
            cadere in 20{1/2} gr. </s>
            <s xml:id="echoid-s6418" xml:space="preserve">♊ & </s>
            <s xml:id="echoid-s6419" xml:space="preserve">♐.</s>
            <s xml:id="echoid-s6420" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6421" xml:space="preserve">Illud vero manifeſtum eſt, Saturnum, quoties hanc præ-
              <lb/>
              <note position="left" xlink:label="note-0306-01" xlink:href="note-0306-01a" xml:space="preserve">Clarion Sa-
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              turnus pro-
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              pter anſas
                <lb/>
              cernitur.</note>
            fert ſpeciem, multo lucidiorem ſeſe intuentibus oſtendere
              <lb/>
            debere, quàm dum nullis brachiis auctus eſt: </s>
            <s xml:id="echoid-s6422" xml:space="preserve">quum tantun-
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            dem luminis fere ab hiſce emanet, quantum ab toto interio-
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            re diſco. </s>
            <s xml:id="echoid-s6423" xml:space="preserve">Atque ita ſemper quo propius verſus Cancri & </s>
            <s xml:id="echoid-s6424" xml:space="preserve">
              <lb/>
            Capricorni ſigna acceſſerit, eo majorem, aut certè ſplendi-
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            diorem, etiam abſque teleſcopio appariturum; </s>
            <s xml:id="echoid-s6425" xml:space="preserve">quippe an-
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            nuli ellipſis ſemper latius ſe pandente, ut in ſequentibus de-
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            clarabitur.</s>
            <s xml:id="echoid-s6426" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6427" xml:space="preserve">Sed & </s>
            <s xml:id="echoid-s6428" xml:space="preserve">aliud circa hanc phaſin obſervandum occurrit, mo-
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              <note position="left" xlink:label="note-0306-02" xlink:href="note-0306-02a" xml:space="preserve">Lunæ Satur-
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              niæ motus
                <lb/>
              apparens
                <lb/>
              ellipticus.</note>
            tus nimirum inſolens Saturnii comitis, qui quidem motus
              <lb/>
            obſervationibus anni 1659 adnotari jam cæpit, verùm hac
              <lb/>
            latiſſimâ anſarum phaſi exiſtente, omnium evidentiſſimè ut
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            ſeſe prodat neceſſe eſt. </s>
            <s xml:id="echoid-s6429" xml:space="preserve">Etenim quum eodem plano & </s>
            <s xml:id="echoid-s6430" xml:space="preserve">an-
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            nulus Saturni & </s>
            <s xml:id="echoid-s6431" xml:space="preserve">comitis orbita contineantur, aut certè pa-
              <lb/>
            rum diverſis; </s>
            <s xml:id="echoid-s6432" xml:space="preserve">conſtat ſimul cum annulo etiam orbitam hanc
              <lb/>
            latiſſimam omnium ellipſin nobis explicaturam: </s>
            <s xml:id="echoid-s6433" xml:space="preserve">eoque futu-
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            rum ut comes apparente motu altè ſupra Saturnum atque in-
              <lb/>
            fra tranſire conſpiciatur, ita ut corpore ejus vel radiis ni-
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            mium propinquis nequaquam nobis occultetur, quemadmo-
              <lb/>
            dum aliàs accidere ſolet. </s>
            <s xml:id="echoid-s6434" xml:space="preserve">Atque ea quidem ellipſis quam ta-
              <lb/>
            li motu deſcribere hiſce in locis cernetur, longitudinem la-
              <lb/>
            titudinis ſuæ duplam ſeſqui alteram habere invenietur, ſicut
              <lb/>
            & </s>
            <s xml:id="echoid-s6435" xml:space="preserve">annuli, quam diximus, ellipſis latiſſima. </s>
            <s xml:id="echoid-s6436" xml:space="preserve">Verum receden-
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            te hinc Saturno ſenſim anguſtior ipſa quoque evadet, quip-
              <lb/>
            pe annuli ellipſi ſemper ſimilis, adeo ut primum fulgore pla-
              <lb/>
            netæ tranſitus comitis conſpici prohibeatur, deinde </s>
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